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Segment Reporting - Segment Results Information (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Segment Reporting Information [Line Items]      
REVENUES $ 1,830,085 $ 1,980,771 $ 1,976,022
Voyage expenses 112,218 138,283 176,614
Vessel operating expenses 806,152 813,326 749,939
Time-charter hire expense 103,646 130,739 214,179
Depreciation and amortization 431,086 455,898 428,608
General and administrative 140,958 144,296 173,604
Asset impairments 167,605 432,196 155,288
Loan loss provisions 748 1,886 0
Net loss (gain) on sale of vessels and equipment (1,995) 6,975 (4,229)
Bargain purchase gain 0 0 (68,535)
Goodwill impairment 0 0 36,652
Restructuring charges 6,921 7,565 5,490
Income (loss) from vessel operations 62,746 (150,393) 108,412
Total assets of operating segments 10,275,048 9,719,938  
Shuttle Tanker and FSO Segment [Member]
      
Segment Reporting Information [Line Items]      
REVENUES 583,201 616,295 617,650
Voyage expenses 99,111 104,382 97,743
Vessel operating expenses 182,973 196,021 216,183
Time-charter hire expense 56,682 56,989 74,478
Depreciation and amortization 116,376 125,104 129,293
General and administrative 37,529 36,484 44,594
Asset impairments 76,782 28,830 43,185
Loan loss provisions 0 0  
Net loss (gain) on sale of vessels and equipment 0 1,112 171
Bargain purchase gain     0
Goodwill impairment     0
Restructuring charges 2,123 652 5,351
Income (loss) from vessel operations 11,625 66,721 6,652
Total assets of operating segments 1,947,905 1,709,674  
FPSO Segment [Member]
      
Segment Reporting Information [Line Items]      
REVENUES 567,620 581,215 464,810
Voyage expenses 0 232 0
Vessel operating expenses 364,986 354,020 255,925
Time-charter hire expense 0 0 0
Depreciation and amortization 151,365 135,413 96,915
General and administrative 51,891 45,139 39,261
Asset impairments 0 0 0
Loan loss provisions 2,634 0  
Net loss (gain) on sale of vessels and equipment (1,338) 0 (4,888)
Bargain purchase gain     (68,535)
Goodwill impairment     0
Restructuring charges 0 0 0
Income (loss) from vessel operations (1,918) 46,411 146,132
Total assets of operating segments 2,836,998 2,824,832  
Liquefied Gas Segment [Member]
      
Segment Reporting Information [Line Items]      
REVENUES 298,228 291,712 273,786
Voyage expenses 602 283 4,862
Vessel operating expenses 61,471 54,773 54,174
Time-charter hire expense 0 0 0
Depreciation and amortization 71,485 69,064 63,641
General and administrative 19,597 18,643 16,315
Asset impairments 0 0 0
Loan loss provisions 0 0  
Net loss (gain) on sale of vessels and equipment 0 0 0
Bargain purchase gain     0
Goodwill impairment     0
Restructuring charges 0 0 0
Income (loss) from vessel operations 145,073 148,949 134,794
Total assets of operating segments 3,616,044 3,148,037  
Conventional tanker [Member]
      
Segment Reporting Information [Line Items]      
REVENUES 381,036 491,549 619,776
Voyage expenses 12,505 33,386 74,009
Vessel operating expenses 196,722 208,512 223,657
Time-charter hire expense 46,964 73,750 139,701
Depreciation and amortization 91,860 126,317 138,759
General and administrative 31,941 44,030 73,434
Asset impairments 90,823 403,366 112,103
Loan loss provisions (1,886) 1,886  
Net loss (gain) on sale of vessels and equipment (657) 5,863 488
Bargain purchase gain     0
Goodwill impairment     36,652
Restructuring charges 4,798 6,913 139
Income (loss) from vessel operations (92,034) (412,474) (179,166)
Total assets of operating segments $ 1,874,101 $ 2,037,394